It rather depends on the state of the market: how readily will your house sell; are there other potential buyers for the property you wish to buy. The easiest way is to sell first, rent short term if need be, and then make an offer on a property. If you want to synchronise buying and selling then that means getting everything together in the window between acceptance of offer and exchange of contracts. But that means being a link in a chain and is there is a risk of it all falling apart.,